The vast majority of pkg-descr files had the following format when they
had both lines:
Author: ...
WWW: ....
So standardize on that, and move them to the end of the file when necessary.
Also fix some more whitespace, and remove more "signature tags" of varying
forms, like -- name, etc.
s/AUTHOR/Author/
A few other various formatting issues

- update audio/lame to 3.98.4
- use ?= for the portrevision of a master port to make it possible to
change it in a slave port which depends upon lame
- bump portrevisions of ports which depend upon lame
- done via a semi-automated way (manual review and fixup)
- I tried to take care to not bump ports which only depend optionaly on
lame (with a default of no dependency)